//===-- X86ISelPattern.cpp - A pattern matching inst selector for X86 -----===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a pattern matching instruction selector for X86.
//
//===----------------------------------------------------------------------===//
#include "X86.h"
#include "X86InstrBuilder.h"
#include "X86RegisterInfo.h"
#include "llvm/Function.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/SSARegMap.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/ADT/Statistic.h"
#include <set>
using namespace llvm;
//===----------------------------------------------------------------------===//
// X86TargetLowering - X86 Implementation of the TargetLowering interface
namespace {
class X86TargetLowering : public TargetLowering {
int VarArgsFrameIndex; // FrameIndex for start of varargs area.
public:
X86TargetLowering(TargetMachine &TM) : TargetLowering(TM) {
// Set up the TargetLowering object.
addRegisterClass(MVT::i8, X86::R8RegisterClass);
addRegisterClass(MVT::i16, X86::R16RegisterClass);
addRegisterClass(MVT::i32, X86::R32RegisterClass);
addRegisterClass(MVT::f64, X86::RFPRegisterClass);
// FIXME: Eliminate these two classes when legalize can handle promotions
// well.
addRegisterClass(MVT::i1, X86::R8RegisterClass);
addRegisterClass